Determine which elements were persisted on Grove SPA

persistance-checker.js

(()=> {
let blockLevelElements = [
  'address', 'article', 'aside', 'blockquote', 'canvas', 'dd', 'div',
  'dl', 'dt', 'fieldset', 'figcaption', 'figure', 'footer', 'form',
  'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'header', 'hr', 'li', 'main',
  'nav', 'noscript', 'ol', 'p', 'pre', 'section', 'table', 'tfoot',
  'ul', 'video'
]

const elements = document.querySelectorAll(blockLevelElements.join(','))

for (let element of elements) {
  element.dataset.tag = 'persisted'
}
})()